kongmen
Bronze Member
owners manual says to bleed fuel system when Changing fuel filter is this necessary? It looks like (in the man.) that I have a paper filter contained within a canister. thanks.
Changing fuel filter
- Thread starter kongmen
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EE_Bota
Elite Member
It is generally a good idea to get as much air out of a diesel fuel system as possible during any operation that would allow air into the system.
Changing your filter did not necessarily introduce air into the piping between the injector pump and the injectors, therefore if you could find a way to get the air out of the filter housing, you may be good.
Some tractors have plugs that allow for the filter housing to be bleed directly.
Many tractors, the only time you may have to bleed the actual injector piping is when you have run it out of fuel.
Changing your filter did not necessarily introduce air into the piping between the injector pump and the injectors, therefore if you could find a way to get the air out of the filter housing, you may be good.
Some tractors have plugs that allow for the filter housing to be bleed directly.
Many tractors, the only time you may have to bleed the actual injector piping is when you have run it out of fuel.
woodchuckie
Platinum Member
On My L2800 when I remove the filter the fuel flow is stopped while it's off. While putting it back on the fuel flow starts again and by the time I've got it secure it is full of fuel again. No air any where.
soulasphil
Platinum Member
Manual for my JD 3520 doesn't say anything about bleeding when changing the fuel filter. Only to do it when fuel is low to avoid spillage.
So you don't bleed? I need to cbange the filter on my L2800 and have been wondering about this.
Bill
repete
Veteran Member
On my 2550 when I change the filter I usually put the filter housing on about 90% of the way then open the fuel supply and let the bowl fill. Once it is overflowing I tighten the filter housing to stop the leak and wipe the excess.
About half the time it will run for a few seconds when started then die. At that point I take the side cover off and open the bleed screw then restart the engine. When it runs smoothly I then close the bleed screw, replace the side cover and I am good to go.
About half the time it will run for a few seconds when started then die. At that point I take the side cover off and open the bleed screw then restart the engine. When it runs smoothly I then close the bleed screw, replace the side cover and I am good to go.
The Dougster
Gold Member
Why not bleed? On my L2800, it takes less than one minute...
Geez Louise... (sorry Louise)
Geez Louise... (sorry Louise)
bellweather
Platinum Member
I recently replaced both fuel filters on my BX22. I recall the manual saying to turn key to activate fuel pump until clicking stops before attempting to start (I assume this filled the lines with fuel). Engine coughed a bit upon startup, but all seemed well afterwards.
RadarTech
Elite Member
rmully
Gold Member
I just did this job yesterday on a YM2020. I remover the entire filter unit because i wanted to replace the shutoff O ring when i reconnected the fuel lines I bleed the system at the filter and at the injector pump....took all of 1 minute.
brandoro
Platinum Member
I have never bled anything after changing the filter, just put it all back together with the new filter, open the fuel valve, fire it up and go. Never had the slightest stumble from the engine not getting enough fuel. The was the previous tractors, B6200 and B7610, haven't felt the need to change the fuel filter on the current B3030.
dcabernel
New member
For the record:
I did the 100 Hour service on my L3240. Cleaned the fuel filter, opened the fuel cock, opened the air vent, started the engine, let it run for 30 sec, shut off, closed air vent.
A week later I started the engine, it ran for a minute then stalled. It would not start again. I removed the fuel filter a couple times to see if I messed up, tried with air vent open/closed etc. Left the tractor sit for a couple hours, no difference. Did a lot of cranking...
I then loosened the fuel filter a little bit so it was slightly leaking and left it that way. I cranked the engine and it started within 10 sec. Took a few minutes to run smoothly as I tightened the fuel filter and slowly closed the air vent. After that, no problems.
Question, the manual says to do the procedure with the tank full, mine was only 1/2 full. Could that possibly make a difference? Did I get air in the system because of this?
I did the 100 Hour service on my L3240. Cleaned the fuel filter, opened the fuel cock, opened the air vent, started the engine, let it run for 30 sec, shut off, closed air vent.
A week later I started the engine, it ran for a minute then stalled. It would not start again. I removed the fuel filter a couple times to see if I messed up, tried with air vent open/closed etc. Left the tractor sit for a couple hours, no difference. Did a lot of cranking...
I then loosened the fuel filter a little bit so it was slightly leaking and left it that way. I cranked the engine and it started within 10 sec. Took a few minutes to run smoothly as I tightened the fuel filter and slowly closed the air vent. After that, no problems.
Question, the manual says to do the procedure with the tank full, mine was only 1/2 full. Could that possibly make a difference? Did I get air in the system because of this?
TripleR
Super Star Member
- Joined
- Mar 5, 2009
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- Missouri
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- Kubota M8540HDC, L5740HSTC, BX2200, BX2660, John Deere 425&1025R, Case, Massey Ferguson, Ford
I decided for the small cost to replace rather than clean a fuel filter, but don't think it would make any difference. I used the same procedure on my L5030 50 hours ago without a full fuel tank and have had no problems.
Daber
New member
I found the Air Release knob and Tractor is running! Thanks all.
MHarryE
Elite Member
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- Northeastern Minnesota
- Tractor
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dcabernel said:
Don't think part full was your problem. I ran my L5740 out of fuel a year ago. I called my wife and had her bring a 5 gallon can and the book. Put in the 5, did just what you said you did, and mine ran fine. A couple days ago I lost power. I pulled the filter (there was dirt and water in the bowl and on top of the filter), cleaned everything up and replaced the filter, opened the shutoff valve and air screw just like you did, let it run for 30 seconds, and have put over 20 hours on it since. Just think you had one of those random odd happenings and were willing to try things and got your tractor going. One thing - when I was trying to get the bowl back in place a large o-ring fell out. They didn't talk about this in the book. I cleaned it and found it fit on the bowl as a seal with its head. Possibly you had an air leak at this o-ring.
